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Simplifying 15 = (12 + -1x) + (9 + -1x) Remove parenthesis around (12 + -1x) 15 = 12 + -1x + (9 + -1x) Remove parenthesis around (9 + -1x) 15 = 12 + -1x + 9 + -1x Reorder the terms: 15 = 12 + 9 + -1x + -1x Combine like terms: 12 + 9 = 21 15 = 21 + -1x + -1x Combine like terms: -1x + -1x = -2x 15 = 21 + -2x Solving 15 = 21 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. 15 + 2x = 21 + -2x + 2x Combine like terms: -2x + 2x = 0 15 + 2x = 21 + 0 15 + 2x = 21 Add '-15' to each side of the equation. 15 + -15 + 2x = 21 + -15 Combine like terms: 15 + -15 = 0 0 + 2x = 21 + -15 2x = 21 + -15 Combine like terms: 21 + -15 = 6 2x = 6 Divide each side by '2'. x = 3 Simplifying x = 3
| 3(2x+11y)= | | 16x+5b=417 | | 15=(12-x)+(9x) | | 1.1k+42z= | | 27+8x=x+3(1+5x) | | 7/10x=200 | | 5x+2+8=x-1-5 | | 0.8h=4.8 | | 8(a+3b)= | | x+(0.06x)=18660000 | | 14v-8v=36 | | 1/6x^2-1/8x=1 | | 2x^4+16x^2+32=0 | | 22+2x=37-6+x | | (1x+y)*z= | | 2x^4+16x^4+32=0 | | 6y+2y-5wheny=3 | | 712=4c | | x+0.06=18660000 | | (5+2y)x= | | (3-7x)-(4-2x)= | | 12x+25=25 | | 4(x-5)=-2(3x+4) | | 0.25c=20 | | Wr*wr*d/r*r*r* | | f(5)=10x-140 | | 39.99+0.45m=62.49 | | 1/4•-4-8 | | 2a^2+2a-40=0 | | 25h=575 | | 15r+135=60r-360 | | 210=x^2+5x+6 |